class_docstr: Samples elements from [start, start+length) sequentially.
  
  Parameters
  ----------
  length : int
      Length of the sequence.
  start : int, default is 0
      The start of the sequence index.
code: def __iter__(self):
      return iter(range(self._start, self._start + self._length))
  
imports: import numpy
label_desc: Use image node_id 2 for calling the SequentialSampler obj's underlying member method code with example usage: obj.__iter__() and returns: iter